Sense25

Sense25 is a high range pattern recognition test consisting of 25 numerical items that should be solved in the most logical and simplest way. There is no time limit, and answers should be carefully thought out. Discussion with others about solutions is not allowed. The items are not arranged in order of difficulty. To receive your score report, please send your solutions to dawid.skrzos@o2.pl. There is a fee of 10 EUR for scoring each submission, which you can pay via PayPal to dawid.skrzos@o2.pl (choose the option to send to a friend or family) or directly to my bank account (Dawid Skrzos, IBAN: PL93156000132016122130000003, SWIFT/BIC: GBGCPLPKXXX). Three attempts are allowed, however, only the first two attempts are considered official scores. 

News!! All my tests are now free of charge if you submit your solutions before 01/01/2026. Proof of identity is required in that case. 

The test:

1) ?, ?, 3000, 0004, ?, ?, 5000

2) 123, 211, 37, ?, ?, 63

3) 1203, 4056, 0780, 9100, ?, ?, 3104

4) 1234, 2045, 3056, ?, 5678

5) 123456, 23456, ?, 123, 56, 4 (explain your answer)

6) ?, 149, ?, 176, ?, 329, 231, ?, 312, ?, ?, 563

7) 3456789, ?, 9, 29, 4789, ?

8) 7, 527, ?, 12416527 (explain your answer)

9) 4, 2, 43, 1, 45, ?, ?, 12

10) 12, 4511, ?, 10111111

11) 11, 299999999, 337, 44, ?, ?

12) ?, 3456, 3456, ?, ?, 3354455556

13) 1, 3, 23, 23-1, ?

14) 2019, 1211, ?, 1413, ?, 3029

15) 5670809, (68)(359)0704, 18745????

16) 1, 12, 6, 64, 15, ?, 10, 9, ?, 19, 12, ?

17) 149, 520, 604, 537, 860, ?, 709

18) 397812, 372927, ?, 378969

19) 12, 198357903958338173, 1892, ?

20) 123456789, 156254093, 137454329, ?

21) 1248635097, ?, 1462509387, 1526378904

22) 123456789, 101456789, 101112789, ?, 415112131

23) ?, 1111, 232323, ?, 4567, ?

24) 1111111111, 1221441672, 144516619369, ?, 116166517878625321

25) 1, 357911, 357, 911, ?, 91, 571, ?, 391, 57, ?, ?, 911, 1357